(Hebrews kerah, from its smoothness) Job 37:10 (R.V., "ice"); Genesis 31:40; Jeremiah 36:30; rendered "ice" in Job 6:16, 38:29; and "crystal" in Ezek. 1:22. "At the present day frost is entirely unknown in the lower portions of the valley of the Jordan, but slight frosts are sometimes felt on the sea-coast and near Lebanon." Throughout Western Asia cold frosty nights are frequently succeeded by warm days.

"Hoar frost" (Hebrews kephor, so called from its covering the ground) is mentioned in Exodus 16:14; Job 38:29; Psalm 147:16.

In Psalm 78:47 the word rendered "frost" (R.V. marg., "great hail-stones"), hanamal, occurs only there. It is rendered by Gesenius, the Hebrew lexicographer, "ant," and so also by others, but the usual interpretation derived from the ancient versions may be maintained.

Noah Webster's New International Dictionary of the English Language

1. (n.) The act of freezing; -- applied chiefly to the congelation of water; congelation of fluids.

2. (n.) The state or temperature of the air which occasions congelation, or the freezing of water; severe cold or freezing weather.

3. (v. i.) Frozen dew; -- called also hoarfrost or white frost.

4. (v. i.) Coldness or insensibility; severity or rigidity of character.

5. (v. t.) To injure by frost; to freeze, as plants.

6. (v. t.) To cover with hoarfrost; to produce a surface resembling frost upon, as upon cake, metals, or glass.

7. (v. t.) To roughen or sharpen, as the nail heads or calks of horseshoes, so as to fit them for frosty weather.